![Pentacyclo[9.5.1.1(3,9).1(5,15).1(7,13)]octasiloxane, octamethyl-](/cid/20-642-6/Pentacyclo-9-5-1-1-3-9-1-5-15-1-7-13-octasiloxane-octamethyl.png "Pentacyclo[9.5.1.1(3,9).1(5,15).1(7,13)]octasiloxane, octamethyl-")
- InChI
- InChI=1S/C8H24O12Si8/c1-21-9-22(2)12-25(5)14-23(3,10-21)16-27(7)17-24(4,11-21)15-26(6,13-22)19-28(8,18-25)20-27/h1-8H3
- InChI Key
- SOQGBGSEJYZNPS-UHFFFAOYSA-N
- Formula
- C8H24O12Si8
- SMILES
-
C[Si]12O[Si]3(C)O[Si]4(C)O[Si]
(C)(O1)O[Si]1(C)O[Si](C)(O2)O[ Si](C)(O3)O[Si](C)(O4)O1 - Molecular Weight1
- 536.95
- CAS
- 17865-85-9
- Other Names
-
- Permethyloctasilsesquioxane
- Octasilsesquioxane, octamethyl-
- ω : Acentric Factor.
- ΔfG° : Standard Gibbs free energy of formation (kJ/mol).
- ΔfH°gas : Enthalpy of formation at standard conditions (kJ/mol).
- ΔvapH° : Enthalpy of vaporization at standard conditions (kJ/mol).
- IE : Ionization energy (eV).
- log10WS : Log10 of Water solubility in mol/l.
- logPoct/wat : Octanol/Water partition coefficient.
- Pc : Critical Pressure (kPa).
- Tboil : Normal Boiling Point Temperature (K).
- Tc : Critical Temperature (K).
- Tfus : Normal melting (fusion) point (K).
- Vc : Critical Volume (m3/kmol).
- 1: Molecular weight from the IUPAC atomic weights tables.
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Physical Properties
| Property | Value | Unit | Source |
|---|---|---|---|
| ω | 0.6790 | Relay (... Calculated Property | |
| ΔfG° | -1098.01 | kJ/mol | Relay (... Calculated Property ⚠️ |
| ΔfH°gas | -3083.05 | kJ/mol | Relay (... Calculated Property |
| ΔvapH° | 84.04 | kJ/mol | Relay (... Calculated Property |
| IE | 9.66 | eV | Relay (... Calculated Property |
| log10WS | -3.15 | Relay (... Calculated Property | |
| logPoct/wat | 0.803 | Crippen Calculated Property | |
| Pc | 714.92 | kPa | Relay (... Calculated Property ⚠️ |
| Tboil | 474.86 | K | Relay (... Calculated Property |
| Tc | 735.97 | K | Relay (... Calculated Property |
| Tfus | 353.51 | K | Relay (... Calculated Property |
| Vc | 1.724 | m3/kmol | Relay (... Calculated Property |
Similar Compounds
Find more compounds similar to Pentacyclo[9.5.1.1(3,9).1(5,15).1(7,13)]octasiloxane, octamethyl-.
Sources
- Cheméo Relay (1.0)
- Cheméo Relay (1.0, beta) ⚠️ Beta: served but experimental, data-limited and below our cross-validation release bar; the Joback value is recommended where available.
- Crippen Method
- Crippen Method
- NIST Webbook
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